Mining-pump



(No Model.)

D. W. BRUNTON.

MINING PUMP Patented Apr. 4.1882.

N. PETERS, Photo-Lithographe wumn mn. D4 0.

Urvrreo STATE DAVID W. BRUNTON, OF LEADVILLE, COLORADO.

PATENT OFFICE.

MINING-PUMP.

SPECIFICATION formingpart of Letters Patent No. 255,928, dated April 4,1882.

Application filed October 31, 1881.

To all whom it may concern.

Be it known that 1, DAVID W. BRUNTON, of Leadville, Colorado, haveinvented certain new and useful Improvements in Mining- Pumps, of whichthe following is a specification.

My invention relates to improvements in mining-pumps used for thepurpose of removing water from deep shafts; and the objects of myinvention are, first, to pump steadily with a less depth of water in theshaft than has heretofore been possible; second, to provide a means ofdraining the shaft should the lower valve become broken or injured andcovered with water; third, to obtain the advantages of atelescope-section without increasing the suction-lift to a height whichwould interfere with the perfect working of the pump at the highestaltitudes; and, fourth, to obviate the use of the cumbrous and expensivewater-tanks at the pump-stations. I attain these objects by themechanism illustrated in the accompanying drawing, in whicha is thereciprocating rod ofa series of Cornish pumps.

m is the strainer to prevent chips and rocks from clogging the valve 1.

k is a taper valve-seat, slightly smaller than the working-barrel S.

n is an auxiliary valve, which, in case of injury to the lower valve, 1,can be dropped into the seat k, after the bucket-valve J has been drawnout of the working-barrel by removing the jack-head t.

P O is the delivery-pipe to the t'orce'pump above.

h is the foundation on which the workingbarrel b of the force-pumprests.

0 is the plunger, and e and d the valves, of the force-pump.

fis the compensator to receive the amount of water displaced by thedownward stroke of the bucket-rod i.

In the mining-pumps heretofore in use the strainer has always been inthe form of a hollow cylinder, and to obtain the required areaofstrainer-opening without weakening the cyl inder it has been necessaryto have the height of the perforated strainer about three times thediameter of the suction-pipe, and, as the water can only be lowered bythe pumps to the (No model.)

level of the upper holes in the strainer, the depth of water inwhich'men were compelled to work in the bottom of the shaft was, with aten-inch pump, about thirty inches. Again, the strainer-openings in theside of the cylinder have been necessarily horizontal, and soon becameclogged with chips and rocks, hence requiring constant cleaning andattention. With my improved form of strainer m the requisite area ofstrainer-opening can beobtained in a height for perforations of one andone-half diameter of the suction-pipe, and the strainer-openings inclinedownward at an angle of about forty-five degrees, and consequently freethemselves from chips and small rocks each time the upward flow of wateris stopped by the valve Z.

Heretofore the seat for the auxiliary valve n has been placed in atapered section of pipe above the chamber of the valve 1, therebyraising the auxiliary valve n to a height above the water which renderedit useless at high altitudes. By placing the taper seat for theauxiliary valve n in the upper neck of the chamber containing the valve1 the distance from the valve-seat k to the water-level is reduced to aminimum.

Heretofore the telescope-join thasbeen placed below the chamber of thevalve 1, and as the shaft was deepened the strainer was lowered bysliding out the telescope-joint. This increased the distance between thevalve Z and the water-level to a height which rendered the pump almostuseless whenever the upper strainer-opening had admitted air. By myimproved method of placing the telescope-slide a outside ofthebucket-working barrel the distance between the working-barrel and thewater-level is reduced to a minimum, and the distance between the lowervalve, 1, and the water-level remains constant so far as affected by theextension of the telescope-slide.

Heretofore the water from the lift-pump has always been discharged intoa tank on alevel with the force-pump, and from the water-tank the wateris raised to the surface by force pumps. The amount of cutting necessaryto receive the tanks discharge and suction pipes weakens theshaft-timbering in a place where the strength is most requiredviz., atthe foundation of the force-pump. In the draw ing the pumps arerepresented on the downstroke. The force-pumpplunger cis forcing thewater from the plunger-barrel I) through the valve dinto the dischargepipe 00. The weight of the column of water in the discharge-pipe 00keeps the valve 6 firmly seated. As the force-pump plunger 0 and thebucket- IOdi of the lift-pump are both rigidly connected to thereciprocating rod a, it follows that when the plunger 0 is descendinginto the working-barrel b and displacing a volume of water equal to itscubic contents through the valve 61 the bucket-rod t of the litt-pump isalso acting as a smaller plunger, and forces a volume ot' water equal toits cubic contents through the pipe 1? 0 into the compensatorf. By thismy improved plan no cutting of the shaft-timbering is necessary, and thenunierous bends in the water-pipe are avoided.

What I claim, and desire to secure by Letters Patent, is-- 1. In amining-pump, the telescopic extensible section a, in combination withand carrying at its lower end a conical strainer, m, of greater diameterthan said pipe u, and provided with perforations opening downwardly,substantially as set forth.

2. In a mining-pump, the working-barrel S, provided with thereciprocating rod and bucket-valve J, in combination with the exteriortelescopic slide,u, carrying valve land strainer m, substantially asspecified.

3. In a mining-pump mechanism, the forcepump 1) e and a lift-pump belowsaid forcepump, in combination with the connectingpipe 0 andcompensating-pipef, allconstructed,arranged, and operated as set forth.

DAVID W. BRUNTON.

Witnesses:

S. D. SILVER, S. 0. BROWN.

